/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:05:09,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:05:09,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:05:09,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:05:09,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:05:09,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:05:09,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:05:09,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:05:09,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:05:09,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:05:09,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:05:09,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:05:09,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:05:09,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:05:09,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:05:09,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:05:09,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:05:09,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:05:09,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:05:09,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:05:09,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:05:09,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:05:09,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:05:09,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:05:09,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:05:09,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:05:09,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:05:09,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:05:09,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:05:09,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:05:09,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:05:09,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:05:09,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:05:09,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:05:09,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:05:09,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:05:09,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:05:09,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:05:09,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:05:09,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:05:09,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:05:09,829 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:05:09,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:05:09,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:05:09,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:05:09,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:05:09,862 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:05:09,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:05:09,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:05:09,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:05:09,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:05:09,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:05:09,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:05:09,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:05:09,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:05:09,867 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:05:09,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:05:09,867 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:05:09,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:05:09,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:05:09,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:05:09,868 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:05:09,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:05:09,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:05:09,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:05:09,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:05:09,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:05:09,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:05:09,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:05:09,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:05:09,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:05:09,870 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:05:10,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:05:10,341 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:05:10,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:05:10,348 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:05:10,349 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:05:10,350 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-09-21 11:05:10,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7109ffd2f/4dbe2c52893e40f8b9f638b19356204d/FLAG6a1727011 [2020-09-21 11:05:11,055 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:05:11,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-09-21 11:05:11,071 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7109ffd2f/4dbe2c52893e40f8b9f638b19356204d/FLAG6a1727011 [2020-09-21 11:05:11,314 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7109ffd2f/4dbe2c52893e40f8b9f638b19356204d [2020-09-21 11:05:11,326 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:05:11,332 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:05:11,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:05:11,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:05:11,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:05:11,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:05:11" (1/1) ... [2020-09-21 11:05:11,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51800d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:11, skipping insertion in model container [2020-09-21 11:05:11,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:05:11" (1/1) ... [2020-09-21 11:05:11,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:05:11,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:05:12,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:05:12,053 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:05:12,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:05:12,210 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:05:12,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:12 WrapperNode [2020-09-21 11:05:12,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:05:12,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:05:12,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:05:12,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:05:12,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:12" (1/1) ... [2020-09-21 11:05:12,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:12" (1/1) ... [2020-09-21 11:05:12,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:12" (1/1) ... [2020-09-21 11:05:12,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:12" (1/1) ... [2020-09-21 11:05:12,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:12" (1/1) ... [2020-09-21 11:05:12,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:12" (1/1) ... [2020-09-21 11:05:12,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:12" (1/1) ... [2020-09-21 11:05:12,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:05:12,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:05:12,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:05:12,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:05:12,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:05:12,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:05:12,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:05:12,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 11:05:12,404 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 11:05:12,404 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 11:05:12,404 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 11:05:12,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 11:05:12,405 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 11:05:12,405 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 11:05:12,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 11:05:12,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 11:05:12,406 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 11:05:12,406 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 11:05:12,407 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 11:05:12,407 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 11:05:12,408 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 11:05:12,408 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 11:05:12,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 11:05:12,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 11:05:12,409 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 11:05:12,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 11:05:12,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 11:05:12,409 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 11:05:12,409 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 11:05:12,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 11:05:12,411 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 11:05:12,411 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 11:05:12,411 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 11:05:12,411 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 11:05:12,411 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 11:05:12,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:05:12,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-21 11:05:12,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 11:05:12,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 11:05:12,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 11:05:12,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 11:05:12,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 11:05:12,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 11:05:12,413 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 11:05:12,413 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 11:05:12,413 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 11:05:12,413 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 11:05:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:05:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:05:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 11:05:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 11:05:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 11:05:12,414 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 11:05:12,415 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 11:05:12,415 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 11:05:12,415 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 11:05:12,415 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 11:05:12,415 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 11:05:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:05:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 11:05:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 11:05:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 11:05:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 11:05:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 11:05:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 11:05:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 11:05:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-21 11:05:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 11:05:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 11:05:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 11:05:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-21 11:05:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 11:05:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 11:05:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 11:05:12,418 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 11:05:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 11:05:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 11:05:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 11:05:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 11:05:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 11:05:12,421 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 11:05:12,422 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 11:05:12,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:05:12,422 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 11:05:12,422 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:05:12,422 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:05:12,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 11:05:12,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:05:12,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:05:12,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:05:12,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:05:12,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 11:05:12,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:05:12,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 11:05:12,424 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 11:05:12,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:05:12,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 11:05:12,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 11:05:12,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 11:05:12,425 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 11:05:12,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:05:12,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:05:12,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:05:15,667 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:05:15,667 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 11:05:15,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:05:15 BoogieIcfgContainer [2020-09-21 11:05:15,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:05:15,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:05:15,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:05:15,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:05:15,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:05:11" (1/3) ... [2020-09-21 11:05:15,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be1324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:05:15, skipping insertion in model container [2020-09-21 11:05:15,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:05:12" (2/3) ... [2020-09-21 11:05:15,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be1324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:05:15, skipping insertion in model container [2020-09-21 11:05:15,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:05:15" (3/3) ... [2020-09-21 11:05:15,692 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2020-09-21 11:05:15,704 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:05:15,715 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:05:15,739 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:05:15,775 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:05:15,775 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:05:15,775 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:05:15,776 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:05:15,777 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:05:15,777 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:05:15,777 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:05:15,778 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:05:15,810 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2020-09-21 11:05:15,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 11:05:15,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:15,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:05:15,824 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:15,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:15,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1875422794, now seen corresponding path program 1 times [2020-09-21 11:05:15,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:15,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241859764] [2020-09-21 11:05:15,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:16,201 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:16,202 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:16,202 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:16,202 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:16,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 11:05:16,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:16,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:05:16,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 11:05:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:16,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:16,655 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:05:16,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:05:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:16,683 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:16,684 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:16,684 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:16,684 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:16,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:16,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:16,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:16,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:16,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:16,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:16,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:16,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:05:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:16,790 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:16,790 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:16,791 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:16,791 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:16,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:16,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:16,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:16,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:16,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:16,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:16,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:16,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:16,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:05:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:16,805 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:16,805 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:16,805 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:16,806 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:16,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:16,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:16,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:16,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:16,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:16,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:16,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:16,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:16,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:05:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:16,815 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:16,815 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:16,815 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:16,815 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:16,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:16,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:16,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:16,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:16,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:16,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:16,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:05:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:16,822 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:16,822 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:16,823 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:16,823 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:16,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:16,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:16,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:16,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:16,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:16,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:16,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:16,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:16,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 11:05:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:16,829 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:16,830 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:16,830 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:16,830 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:16,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:16,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:16,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:16,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:16,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:16,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:16,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:05:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:16,837 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:16,837 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:16,838 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:16,838 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:16,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:16,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:16,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:16,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:16,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:16,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:16,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:16,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:05:16,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241859764] [2020-09-21 11:05:16,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:05:16,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:05:16,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936705089] [2020-09-21 11:05:16,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:05:16,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:05:16,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:05:16,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:05:16,886 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 3 states. [2020-09-21 11:05:18,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:05:18,195 INFO L93 Difference]: Finished difference Result 320 states and 417 transitions. [2020-09-21 11:05:18,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:05:18,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 11:05:18,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:05:18,216 INFO L225 Difference]: With dead ends: 320 [2020-09-21 11:05:18,216 INFO L226 Difference]: Without dead ends: 173 [2020-09-21 11:05:18,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:05:18,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-09-21 11:05:18,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2020-09-21 11:05:18,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-09-21 11:05:18,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-09-21 11:05:18,325 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 46 [2020-09-21 11:05:18,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:05:18,325 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-09-21 11:05:18,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:05:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-09-21 11:05:18,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 11:05:18,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:18,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:05:18,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:05:18,330 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:18,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:18,331 INFO L82 PathProgramCache]: Analyzing trace with hash -2108875382, now seen corresponding path program 1 times [2020-09-21 11:05:18,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:18,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693926857] [2020-09-21 11:05:18,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:18,420 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:18,420 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:18,421 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:18,421 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:18,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 11:05:18,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:18,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 11:05:18,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:18,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:18,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 11:05:18,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:05:18,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:18,694 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:05:18,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:05:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:18,703 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:18,703 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:18,703 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:18,703 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:18,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:18,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:18,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:18,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:18,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:18,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:18,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:18,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:18,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:05:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:18,741 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:18,741 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:18,741 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:18,741 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:18,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:18,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:18,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:18,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:18,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:18,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:18,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:05:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:18,746 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:18,746 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:18,746 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:18,747 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:18,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:18,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:18,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:18,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:18,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:05:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:18,751 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:18,751 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:18,752 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:18,752 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:18,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:18,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:18,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:18,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:18,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:18,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:05:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:18,757 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:18,757 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:18,757 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:18,757 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:18,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:18,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:18,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:18,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:18,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:18,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:18,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:18,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:05:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:18,762 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:18,762 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:18,762 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:18,763 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:18,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:18,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:18,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:18,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:18,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:18,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:05:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:18,768 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:18,768 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:18,769 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:18,769 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:18,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:18,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:18,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:18,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:18,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:18,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:18,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:18,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:18,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:05:18,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693926857] [2020-09-21 11:05:18,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:05:18,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:05:18,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377878330] [2020-09-21 11:05:18,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:05:18,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:05:18,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:05:18,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:05:18,782 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 4 states. [2020-09-21 11:05:19,280 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:20,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:05:20,315 INFO L93 Difference]: Finished difference Result 243 states and 296 transitions. [2020-09-21 11:05:20,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:05:20,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 11:05:20,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:05:20,319 INFO L225 Difference]: With dead ends: 243 [2020-09-21 11:05:20,320 INFO L226 Difference]: Without dead ends: 157 [2020-09-21 11:05:20,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:05:20,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-09-21 11:05:20,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 129. [2020-09-21 11:05:20,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-09-21 11:05:20,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-09-21 11:05:20,359 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 47 [2020-09-21 11:05:20,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:05:20,359 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-09-21 11:05:20,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:05:20,360 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-09-21 11:05:20,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 11:05:20,364 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:20,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:05:20,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:05:20,365 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:20,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:20,365 INFO L82 PathProgramCache]: Analyzing trace with hash -2135499519, now seen corresponding path program 1 times [2020-09-21 11:05:20,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:20,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196186419] [2020-09-21 11:05:20,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:20,740 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:05:20,741 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:20,741 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:20,741 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:20,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 11:05:20,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:20,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-09-21 11:05:20,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:20,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:05:20,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:20,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 11:05:20,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:21,088 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:05:21,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:05:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:21,203 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:21,203 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:21,203 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:21,204 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:21,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:21,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:21,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-21 11:05:21,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:21,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:21,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:21,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:05:21,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:21,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:05:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:21,249 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:21,249 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:21,249 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:21,249 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:21,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:21,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:21,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:21,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:21,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:21,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:21,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:21,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:05:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:21,256 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:21,256 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:21,257 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:21,257 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:21,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:21,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:21,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:21,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:21,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:21,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:21,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:21,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:21,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:05:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:21,265 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:21,265 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:21,265 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:21,265 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:21,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:21,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:21,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:05:21,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:21,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:21,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:21,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:21,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:21,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:05:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:21,274 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:21,274 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:21,274 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:21,276 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:21,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:21,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:21,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:21,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:21,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:21,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:21,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:21,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:21,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:05:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:21,282 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:21,282 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:21,282 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:21,283 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:21,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:21,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:21,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:21,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:21,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:21,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 11:05:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:21,288 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:21,288 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:21,288 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:21,288 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:21,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:21,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:21,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:21,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:21,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:21,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:21,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:21,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:05:21,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196186419] [2020-09-21 11:05:21,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:05:21,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:05:21,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614396101] [2020-09-21 11:05:21,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:05:21,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:05:21,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:05:21,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:05:21,299 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 4 states. [2020-09-21 11:05:21,718 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:05:23,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:05:23,462 INFO L93 Difference]: Finished difference Result 379 states and 466 transitions. [2020-09-21 11:05:23,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:05:23,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-21 11:05:23,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:05:23,467 INFO L225 Difference]: With dead ends: 379 [2020-09-21 11:05:23,467 INFO L226 Difference]: Without dead ends: 274 [2020-09-21 11:05:23,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:05:23,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-09-21 11:05:23,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 224. [2020-09-21 11:05:23,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-21 11:05:23,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 267 transitions. [2020-09-21 11:05:23,529 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 267 transitions. Word has length 52 [2020-09-21 11:05:23,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:05:23,529 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 267 transitions. [2020-09-21 11:05:23,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:05:23,530 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 267 transitions. [2020-09-21 11:05:23,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 11:05:23,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:23,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:05:23,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:05:23,533 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:23,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:23,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1973278076, now seen corresponding path program 1 times [2020-09-21 11:05:23,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:23,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188313307] [2020-09-21 11:05:23,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:23,862 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:23,862 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:23,863 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:23,863 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:23,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 11:05:23,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:23,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-09-21 11:05:23,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:23,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 11:05:23,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:23,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 11:05:23,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:24,285 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:05:24,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:05:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:24,349 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:24,350 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:24,350 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:24,351 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:24,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:24,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:24,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 11:05:24,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:24,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:24,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:24,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:05:24,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:24,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:05:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:24,393 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:24,393 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:24,393 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:24,394 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:24,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:24,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:24,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:24,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:24,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:24,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:05:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:24,400 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:24,401 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:24,401 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:24,401 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:24,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:24,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:24,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:24,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:24,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:24,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:05:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:24,410 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:24,410 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:24,411 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:24,411 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:24,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:24,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:24,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:24,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:24,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:24,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:24,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:24,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:24,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:05:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:24,418 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:24,419 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:24,419 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:24,420 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:24,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:24,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:24,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:24,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:24,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:24,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:24,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 11:05:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:24,446 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:24,447 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:24,447 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:24,447 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:24,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:05:24,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:24,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:24,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:24,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:24,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:24,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:05:24,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:24,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:05:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:24,459 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:24,459 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:24,460 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:24,460 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:24,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:24,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:24,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:05:24,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:24,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:05:24,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:24,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:24,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:24,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 11:05:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:24,489 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:24,490 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:24,490 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:24,490 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:24,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:24,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:24,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:24,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:24,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:24,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:24,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:05:24,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188313307] [2020-09-21 11:05:24,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:05:24,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:05:24,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435864132] [2020-09-21 11:05:24,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:05:24,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:05:24,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:05:24,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:05:24,507 INFO L87 Difference]: Start difference. First operand 224 states and 267 transitions. Second operand 8 states. [2020-09-21 11:05:25,331 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:05:26,425 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:05:26,796 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:05:27,190 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:05:27,550 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:05:28,053 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:29,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:05:29,134 INFO L93 Difference]: Finished difference Result 721 states and 928 transitions. [2020-09-21 11:05:29,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:05:29,135 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-09-21 11:05:29,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:05:29,142 INFO L225 Difference]: With dead ends: 721 [2020-09-21 11:05:29,142 INFO L226 Difference]: Without dead ends: 521 [2020-09-21 11:05:29,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:05:29,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-09-21 11:05:29,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 409. [2020-09-21 11:05:29,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-09-21 11:05:29,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 492 transitions. [2020-09-21 11:05:29,253 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 492 transitions. Word has length 57 [2020-09-21 11:05:29,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:05:29,254 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 492 transitions. [2020-09-21 11:05:29,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:05:29,254 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 492 transitions. [2020-09-21 11:05:29,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 11:05:29,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:29,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:05:29,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:05:29,257 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:29,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:29,258 INFO L82 PathProgramCache]: Analyzing trace with hash -820899264, now seen corresponding path program 1 times [2020-09-21 11:05:29,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:29,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524551308] [2020-09-21 11:05:29,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:29,720 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:29,720 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:29,721 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:29,721 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:29,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 11:05:29,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:29,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-09-21 11:05:29,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:29,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-21 11:05:29,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:29,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-21 11:05:29,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:30,106 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:05:30,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:05:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:30,199 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:30,200 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:30,200 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:30,200 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:30,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:30,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-21 11:05:30,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:30,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:05:30,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:30,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:05:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:30,249 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:30,249 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:30,250 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:30,250 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:30,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:30,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:30,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:30,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:30,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:30,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:30,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:05:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:30,257 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:30,258 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:30,258 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:30,259 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:30,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:30,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:30,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:30,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:30,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:30,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:30,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:30,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:30,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:05:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:30,267 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:30,268 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:30,268 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:30,269 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:30,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:30,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:30,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:05:30,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:30,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:30,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:30,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:30,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:30,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:05:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:30,277 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:30,277 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:30,277 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:30,277 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:30,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:30,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:30,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:30,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:30,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:30,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:30,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:05:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:30,301 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:30,301 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:30,302 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:30,303 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:30,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:30,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:30,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:05:30,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:30,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:30,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:30,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:30,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:30,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:05:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:30,335 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:30,335 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:30,336 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:30,339 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:30,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:05:30,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:30,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:05:30,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:30,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:05:30,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:30,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 11:05:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:30,349 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:30,349 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:30,350 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:30,350 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:30,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:30,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:30,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:30,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:30,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:30,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:30,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:30,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:30,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 11:05:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:30,363 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:30,363 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:30,363 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:30,364 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:30,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:30,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:30,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:05:30,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:30,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:05:30,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:30,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:05:30,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524551308] [2020-09-21 11:05:30,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:05:30,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 11:05:30,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684876941] [2020-09-21 11:05:30,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:05:30,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:05:30,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:05:30,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:05:30,441 INFO L87 Difference]: Start difference. First operand 409 states and 492 transitions. Second operand 9 states. [2020-09-21 11:05:31,069 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:05:32,259 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 11:05:32,641 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:05:32,969 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 11:05:33,705 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:34,096 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:35,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:05:35,401 INFO L93 Difference]: Finished difference Result 1218 states and 1629 transitions. [2020-09-21 11:05:35,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 11:05:35,402 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-09-21 11:05:35,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:05:35,415 INFO L225 Difference]: With dead ends: 1218 [2020-09-21 11:05:35,415 INFO L226 Difference]: Without dead ends: 833 [2020-09-21 11:05:35,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-09-21 11:05:35,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2020-09-21 11:05:35,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 669. [2020-09-21 11:05:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 669 states. [2020-09-21 11:05:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 824 transitions. [2020-09-21 11:05:35,618 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 824 transitions. Word has length 61 [2020-09-21 11:05:35,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:05:35,619 INFO L479 AbstractCegarLoop]: Abstraction has 669 states and 824 transitions. [2020-09-21 11:05:35,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:05:35,619 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 824 transitions. [2020-09-21 11:05:35,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 11:05:35,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:35,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:05:35,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:05:35,627 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:35,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:35,627 INFO L82 PathProgramCache]: Analyzing trace with hash 16386475, now seen corresponding path program 1 times [2020-09-21 11:05:35,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:35,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13402899] [2020-09-21 11:05:35,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:35,691 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:35,691 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:35,691 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:35,691 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:35,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-21 11:05:35,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:35,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:05:35,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:35,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:05:35,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-21 11:05:35,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:05:35,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:35,964 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:05:35,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:05:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:35,976 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:35,976 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:35,976 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:35,976 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:35,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:35,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:35,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:35,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:35,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:35,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:36,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:05:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:36,003 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:36,003 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:36,003 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:36,003 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:36,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:36,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:36,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:36,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:36,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:36,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:36,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:36,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:36,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:05:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:36,007 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:36,007 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:36,007 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:36,007 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:36,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:36,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:36,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:05:36,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:36,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:36,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:36,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:36,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:36,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:05:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:36,011 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:36,011 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:36,011 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:36,012 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:36,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:36,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:36,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:05:36,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:36,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:36,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:36,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:36,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:36,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:05:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:36,016 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:36,016 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:36,016 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:36,016 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:36,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:36,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:36,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:05:36,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:36,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:36,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:36,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:36,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:36,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:05:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:36,034 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:36,071 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:36,072 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:36,072 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:36,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:36,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:36,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 11:05:36,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:36,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:36,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:36,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:36,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:36,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:05:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:36,097 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:36,097 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:36,098 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:36,098 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:36,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 11:05:36,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:36,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:05:36,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:36,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:05:36,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 11:05:36,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:05:36,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:36,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:05:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:36,116 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:36,116 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:36,117 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:36,117 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:36,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:05:36,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:36,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:05:36,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:05:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:05:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:05:36,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:36,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:05:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:36,143 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:36,144 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:36,144 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:36,144 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:36,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:05:36,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:36,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:05:36,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:36,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:05:36,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:36,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:05:36,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:36,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:05:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:36,171 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:36,172 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:36,172 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:36,172 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:36,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:05:36,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:36,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:36,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:36,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:36,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:36,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:36,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:36,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:05:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:36,177 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:36,177 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:36,178 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:36,178 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:36,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:36,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:36,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:36,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:36,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:36,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:36,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:36,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:36,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 11:05:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:36,187 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:36,188 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:36,188 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:36,188 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:36,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:36,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:36,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:05:36,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:36,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:36,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:36,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:36,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:36,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 11:05:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:36,192 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:36,192 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:36,192 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:36,193 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:36,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:36,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:36,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:05:36,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:36,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:36,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:05:36,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13402899] [2020-09-21 11:05:36,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:05:36,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 11:05:36,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414139869] [2020-09-21 11:05:36,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:05:36,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:05:36,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:05:36,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:05:36,207 INFO L87 Difference]: Start difference. First operand 669 states and 824 transitions. Second operand 9 states. [2020-09-21 11:05:37,843 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:38,156 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 11:05:38,494 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:38,837 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:40,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:05:40,072 INFO L93 Difference]: Finished difference Result 1525 states and 2012 transitions. [2020-09-21 11:05:40,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:05:40,073 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-09-21 11:05:40,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:05:40,080 INFO L225 Difference]: With dead ends: 1525 [2020-09-21 11:05:40,081 INFO L226 Difference]: Without dead ends: 880 [2020-09-21 11:05:40,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:05:40,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-09-21 11:05:40,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 695. [2020-09-21 11:05:40,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-21 11:05:40,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 852 transitions. [2020-09-21 11:05:40,214 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 852 transitions. Word has length 84 [2020-09-21 11:05:40,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:05:40,214 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 852 transitions. [2020-09-21 11:05:40,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:05:40,215 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 852 transitions. [2020-09-21 11:05:40,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 11:05:40,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:40,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:05:40,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:05:40,217 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:40,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:40,218 INFO L82 PathProgramCache]: Analyzing trace with hash 39018729, now seen corresponding path program 1 times [2020-09-21 11:05:40,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:40,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779477107] [2020-09-21 11:05:40,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:40,269 FATAL L256 erpolLogProxyWrapper]: Difference in size: 4 [2020-09-21 11:05:40,269 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -55 [2020-09-21 11:05:40,270 FATAL L256 erpolLogProxyWrapper]: Difference in width: 55 [2020-09-21 11:05:40,270 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:40,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-21 11:05:40,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:40,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:05:40,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:40,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:05:40,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-21 11:05:40,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:40,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:40,563 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:05:40,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:05:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:40,572 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:40,572 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:40,572 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:40,572 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:40,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:40,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:40,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:40,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:40,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:40,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:40,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:05:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:40,600 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:40,600 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:40,600 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:40,600 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:40,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:40,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:40,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:40,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:40,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:40,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:40,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:40,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:40,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:05:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:40,604 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:40,604 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:40,605 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:40,605 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:40,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:40,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:40,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:40,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:40,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:40,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:40,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:40,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:40,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:05:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:40,608 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:40,609 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:40,609 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:40,609 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:40,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:40,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:40,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:40,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:40,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:40,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:40,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:40,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:40,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:05:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:40,613 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:40,613 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:40,614 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:40,614 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:40,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:40,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:40,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:40,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:40,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:40,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:40,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:40,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:40,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:05:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:40,642 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:40,642 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:40,643 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:40,643 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:40,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:40,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:40,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:40,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:40,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:40,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:40,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:40,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:40,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:05:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:40,661 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:40,662 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:40,662 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:40,662 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:40,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 11:05:40,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:40,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:05:40,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:05:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:05:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:40,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:40,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:05:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:40,677 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:40,678 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:40,678 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:40,678 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:40,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:05:40,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:40,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:05:40,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:40,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:05:40,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:05:40,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:40,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:40,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:05:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:40,690 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:40,690 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:40,690 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:40,690 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:40,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:05:40,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:40,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:05:40,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:40,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:05:40,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:05:40,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:40,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:40,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:05:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:40,716 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:40,717 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:40,717 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:40,717 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:40,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:05:40,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:40,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:05:40,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:05:40,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:40,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:40,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:40,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:05:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:40,737 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:40,737 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:40,737 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:40,737 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:40,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:40,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:40,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:40,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:40,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:40,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:40,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:40,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:40,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 11:05:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:40,743 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:40,743 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:40,743 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:40,743 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:40,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:40,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:40,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:40,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:40,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:40,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:40,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:40,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:40,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 11:05:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:40,748 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:40,748 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:40,748 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:40,748 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:40,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:40,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:40,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:05:40,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:40,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:05:40,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779477107] [2020-09-21 11:05:40,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:05:40,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:05:40,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509262572] [2020-09-21 11:05:40,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:05:40,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:05:40,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:05:40,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:05:40,763 INFO L87 Difference]: Start difference. First operand 695 states and 852 transitions. Second operand 8 states. [2020-09-21 11:05:42,282 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:42,575 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:42,887 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:05:44,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:05:44,186 INFO L93 Difference]: Finished difference Result 1579 states and 2117 transitions. [2020-09-21 11:05:44,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:05:44,187 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-09-21 11:05:44,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:05:44,195 INFO L225 Difference]: With dead ends: 1579 [2020-09-21 11:05:44,195 INFO L226 Difference]: Without dead ends: 908 [2020-09-21 11:05:44,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:05:44,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-09-21 11:05:44,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 711. [2020-09-21 11:05:44,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 711 states. [2020-09-21 11:05:44,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 868 transitions. [2020-09-21 11:05:44,349 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 868 transitions. Word has length 84 [2020-09-21 11:05:44,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:05:44,349 INFO L479 AbstractCegarLoop]: Abstraction has 711 states and 868 transitions. [2020-09-21 11:05:44,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:05:44,349 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 868 transitions. [2020-09-21 11:05:44,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 11:05:44,352 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:44,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:05:44,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:05:44,353 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:44,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:44,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1064510728, now seen corresponding path program 1 times [2020-09-21 11:05:44,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:44,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756638404] [2020-09-21 11:05:44,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:44,646 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:44,646 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:44,647 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:44,647 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:44,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-21 11:05:44,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:44,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-21 11:05:44,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:05:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-21 11:05:44,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:44,940 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 11:05:44,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:05:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:44,995 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:44,995 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:44,996 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:44,996 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:44,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:44,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:44,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 11:05:44,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:44,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:44,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:44,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 11:05:44,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:45,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:05:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:45,031 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:45,031 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:45,031 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:45,031 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:45,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:45,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:45,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:45,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:45,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:45,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:45,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:05:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:45,036 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:45,036 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:45,036 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:45,037 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:45,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:45,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:45,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:45,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:45,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:45,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:45,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:45,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:45,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:05:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:45,043 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:45,044 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:45,044 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:45,044 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:45,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:45,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:45,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:45,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:45,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:45,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:45,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:45,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:45,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:05:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:45,050 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:45,051 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:45,051 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:45,051 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:45,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:05:45,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:45,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:45,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:45,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:45,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:45,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:05:45,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:45,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:05:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:45,065 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:45,066 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:45,066 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:45,066 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:45,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:45,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:45,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:45,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:45,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:45,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:45,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:45,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:45,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:05:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:45,086 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:45,086 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:45,087 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:45,087 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:45,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 11:05:45,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:45,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:05:45,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:45,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:45,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:05:45,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 11:05:45,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:45,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:05:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:45,142 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:45,142 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:45,143 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:45,143 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:45,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:05:45,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:45,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:45,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:45,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:45,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:45,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:05:45,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:45,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 11:05:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:45,167 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:45,167 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:45,167 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:45,168 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:45,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:05:45,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:45,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:45,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:45,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:45,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:45,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:05:45,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:45,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:05:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:45,191 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:45,192 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:45,192 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:45,192 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:45,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:05:45,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:45,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:05:45,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:45,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:45,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:45,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 11:05:45,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:45,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:05:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:45,212 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:45,213 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:45,213 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:45,213 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:45,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:45,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:45,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:45,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:45,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:05:45,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:05:45,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:05:45,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:45,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 11:05:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:45,221 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:45,221 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:45,221 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:45,222 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:45,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:45,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:45,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:45,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:45,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:45,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:45,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:45,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:05:45,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 11:05:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:05:45,232 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:05:45,232 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:05:45,233 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:05:45,233 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:05:45,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:05:45,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:05:45,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:05:45,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:05:45,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:05:45,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 11:05:45,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:05:45,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:05:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:05:45,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756638404] [2020-09-21 11:05:45,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:05:45,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 11:05:45,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251971491] [2020-09-21 11:05:45,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:05:45,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:05:45,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:05:45,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:05:45,261 INFO L87 Difference]: Start difference. First operand 711 states and 868 transitions. Second operand 7 states. [2020-09-21 11:05:45,784 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:05:46,369 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 11:05:49,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:05:49,314 INFO L93 Difference]: Finished difference Result 2347 states and 3174 transitions. [2020-09-21 11:05:49,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 11:05:49,314 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-09-21 11:05:49,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:05:49,328 INFO L225 Difference]: With dead ends: 2347 [2020-09-21 11:05:49,328 INFO L226 Difference]: Without dead ends: 1660 [2020-09-21 11:05:49,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:05:49,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2020-09-21 11:05:49,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1409. [2020-09-21 11:05:49,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1409 states. [2020-09-21 11:05:49,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 1734 transitions. [2020-09-21 11:05:49,711 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 1734 transitions. Word has length 84 [2020-09-21 11:05:49,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:05:49,712 INFO L479 AbstractCegarLoop]: Abstraction has 1409 states and 1734 transitions. [2020-09-21 11:05:49,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:05:49,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 1734 transitions. [2020-09-21 11:05:49,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-21 11:05:49,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:05:49,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:05:49,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:05:49,715 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:05:49,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:05:49,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1546821858, now seen corresponding path program 1 times [2020-09-21 11:05:49,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:05:49,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087156734] [2020-09-21 11:05:49,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:05:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:05:49,803 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:05:49,804 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:05:49,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:05:49,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:05:49 BoogieIcfgContainer [2020-09-21 11:05:49,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:05:49,853 INFO L168 Benchmark]: Toolchain (without parser) took 38525.51 ms. Allocated memory was 138.4 MB in the beginning and 620.8 MB in the end (delta: 482.3 MB). Free memory was 100.0 MB in the beginning and 480.3 MB in the end (delta: -380.2 MB). Peak memory consumption was 102.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:05:49,854 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:05:49,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 878.33 ms. Allocated memory was 138.4 MB in the beginning and 205.5 MB in the end (delta: 67.1 MB). Free memory was 99.4 MB in the beginning and 174.2 MB in the end (delta: -74.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:05:49,861 INFO L168 Benchmark]: Boogie Preprocessor took 111.61 ms. Allocated memory is still 205.5 MB. Free memory was 174.2 MB in the beginning and 169.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:05:49,867 INFO L168 Benchmark]: RCFGBuilder took 3356.83 ms. Allocated memory was 205.5 MB in the beginning and 235.9 MB in the end (delta: 30.4 MB). Free memory was 169.3 MB in the beginning and 197.9 MB in the end (delta: -28.6 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:05:49,870 INFO L168 Benchmark]: TraceAbstraction took 34168.41 ms. Allocated memory was 235.9 MB in the beginning and 620.8 MB in the end (delta: 384.8 MB). Free memory was 197.9 MB in the beginning and 480.3 MB in the end (delta: -282.4 MB). Peak memory consumption was 102.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:05:49,877 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 878.33 ms. Allocated memory was 138.4 MB in the beginning and 205.5 MB in the end (delta: 67.1 MB). Free memory was 99.4 MB in the beginning and 174.2 MB in the end (delta: -74.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.61 ms. Allocated memory is still 205.5 MB. Free memory was 174.2 MB in the beginning and 169.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3356.83 ms. Allocated memory was 205.5 MB in the beginning and 235.9 MB in the end (delta: 30.4 MB). Free memory was 169.3 MB in the beginning and 197.9 MB in the end (delta: -28.6 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34168.41 ms. Allocated memory was 235.9 MB in the beginning and 620.8 MB in the end (delta: 384.8 MB). Free memory was 197.9 MB in the beginning and 480.3 MB in the end (delta: -282.4 MB). Peak memory consumption was 102.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 383]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int waterLevel = 1; [L49] int methaneLevelCritical = 0; [L158] int pumpRunning = 0; [L159] int systemActive = 1; [L458] int cleanupTimeShifts = 4; [L752] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L534] int retValue_acc ; [L535] int tmp ; [L539] FCALL select_helpers() [L540] FCALL select_features() [L541] CALL, EXPR valid_product() [L975] int retValue_acc ; [L978] retValue_acc = 1 [L979] return (retValue_acc); [L541] RET, EXPR valid_product() [L541] tmp = valid_product() [L543] COND TRUE \read(tmp) [L545] FCALL setup() [L546] CALL runTest() [L525] CALL test() [L390] int splverifierCounter ; [L391] int tmp ; [L392] int tmp___0 ; [L393] int tmp___1 ; [L394] int tmp___2 ; [L397] splverifierCounter = 0 [L399] COND TRUE 1 [L401] COND TRUE splverifierCounter < 4 [L407] tmp = __VERIFIER_nondet_int() [L409] COND TRUE \read(tmp) [L411] CALL waterRise() [L66] COND TRUE waterLevel < 2 [L67] waterLevel = waterLevel + 1 [L411] RET waterRise() [L417] tmp___0 = __VERIFIER_nondet_int() [L419] COND TRUE \read(tmp___0) [L421] CALL changeMethaneLevel() [L78] COND FALSE !(\read(methaneLevelCritical)) [L81] methaneLevelCritical = 1 [L421] RET changeMethaneLevel() [L427] tmp___2 = __VERIFIER_nondet_int() [L429] COND FALSE !(\read(tmp___2)) [L435] tmp___1 = __VERIFIER_nondet_int() [L437] COND FALSE !(\read(tmp___1)) [L446] CALL timeShift() [L166] COND FALSE !(\read(pumpRunning)) [L173] COND TRUE \read(systemActive) [L175] CALL processEnvironment() [L221] int tmp ; [L224] COND FALSE !(\read(pumpRunning)) [L239] CALL processEnvironment__wrappee__highWaterSensor() [L195] int tmp ; [L198] COND TRUE ! pumpRunning [L200] CALL, EXPR isHighWaterLevel() [L318] int retValue_acc ; [L319] int tmp ; [L320] int tmp___0 ; [L324] CALL, EXPR isHighWaterSensorDry() [L128] int retValue_acc ; [L131] COND FALSE !(waterLevel < 2) [L135] retValue_acc = 0 [L136] return (retValue_acc); [L324] RET, EXPR isHighWaterSensorDry() [L324] tmp = isHighWaterSensorDry() [L326] COND FALSE !(\read(tmp)) [L329] tmp___0 = 1 [L331] retValue_acc = tmp___0 [L332] return (retValue_acc); [L200] RET, EXPR isHighWaterLevel() [L200] tmp = isHighWaterLevel() [L202] COND TRUE \read(tmp) [L204] CALL activatePump() [L249] pumpRunning = 1 [L204] RET activatePump() [L239] RET processEnvironment__wrappee__highWaterSensor() [L175] RET processEnvironment() [L181] CALL __utac_acc__Specification1_spec__1() [L558] int tmp ; [L559] int tmp___0 ; [L563] CALL, EXPR isMethaneLevelCritical() [L87] int retValue_acc ; [L90] retValue_acc = methaneLevelCritical [L91] return (retValue_acc); [L563] RET, EXPR isMethaneLevelCritical() [L563] tmp = isMethaneLevelCritical() [L565] COND TRUE \read(tmp) [L567] CALL, EXPR isPumpRunning() [L273] int retValue_acc ; [L276] retValue_acc = pumpRunning [L277] return (retValue_acc); [L567] RET, EXPR isPumpRunning() [L567] tmp___0 = isPumpRunning() [L569] COND TRUE \read(tmp___0) [L571] CALL __automaton_fail() [L383] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 26.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1019 SDtfs, 1714 SDslu, 850 SDs, 0 SdLazy, 4339 SolverSat, 1105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 253 GetRequests, 177 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1409occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 1022 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 603 NumberOfCodeBlocks, 603 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 507 ConstructedInterpolants, 0 QuantifiedInterpolants, 149744 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...